Hydraulically activated setting tool and method

A method for manufacturing a setting tool for setting an auxiliary tool in a well, the method comprising:

• placing a floating piston in a housing to close an end of a pressure chamber, the housing being configured to prevent a well fluid from entering inside the pressure chamber;
• placing an attached piston in the housing, wherein the attached piston is configured to actuate the auxiliary tool;
• establishing a fluid chamber between the floating piston and the attached piston, wherein the fluid chamber holds a fluid;
• and
• placing a communication element inside the housing, the communication element being configured to establish a fluid communication between an outside and an inside of the housing.

A method for setting an auxiliary tool in a well with a setting tool, the method comprising:

• attaching the setting tool to the auxiliary tool;
• lowering the setting tool and the auxiliary tool to a desired location inside the well;
• establishing fluid communication between the inside of the setting tool and an outside of the setting tool by creating a hole in a wall of the housing with a punch charge located inside the housing so that the well fluid enters inside a pressure chamber;
• and
• increasing a pressure of a well fluid to actuate the setting tool to set the auxiliary tool.